Holy Baptism is like a door by which those that are baptized enter into the holy Church and become fellow citizens with the saints, and of the household of God (Eph. 2:19). And not just so, but before Baptism there are renunciations and vows:
1. We then renounced Satan and all his evil works. Satan is a wicked and evil spirit. He was created good by God, but he and those of like mind with him apostasized from Him, and so from light they became dark, and from good they became evil and wicked. His works are idolatry, pride, adultery, prodigality, all uncleanliness, slander, blasphemy and every sin; for he is the inventor of sin, and he beguiled our ancestors in paradise and led them into sin and apostasy from God. We renounce this wicked spirit and all his evil works before Baptism.
2. We renounce every vanity, pride and pomp of this world, as ones called to and renewed for everlasting life.
3. We promise to serve Christ the Son of God in faith and in truth together with the Father and the Holy Spirit, and to follow in His footsteps.
4. Thus we establish a covenant between God and us. We, who have renounced Satan, promise to serve God and be faithful to him. God accepts us in His supreme mercy and promises us an inheritance in everlasting life and the Kingdom, and washes us who are defiled by sin in the laver of Baptism. He sanctifies and justifies us, as the priest says over everyone who is baptized, Thou art washed, thou art sanctified, thou art justified (cf. I Cor. 6:11).
Beloved Christians, let us remember these renunciations and vows, and consider whether we keep them, for it is a grave thing to lie to God, and it is very dangerous to be found false before Him. Let us consider, then, whether any of us have not gone back to Satan, whether we have not renounced Christ and abandoned Him? Let us consider on whose side we find ourselves, on Satan's or on Christ's. One serves and belongs to him whose will he performs. He renounces Christ not only he who renounces His holy name and does not confess Him to be the Son of God and his Saviour, but also he who sins against conscience and recklessly breaks His holy commandments. This is the teaching of the Apostles. For the Apostle says, They profess that they know God; but in works they deny Him, and the rest (Tit. 1:16).
Do you see that people reject God in works too, and not just with their lips? Is anyone a prodigal, and does he commit adultery? He rejects Christ. Does anyone hate his neighbor and seek him out to harm him? He has apostasized from Christ. Does anyone steal; does he rob and take away his neighbor's goods? He has departed from Christ. Does anyone deceive and flatter his neighbor? He is no longer with Christ, but in all these things he submits to the enemy of salvation, and so he does not stand in the promises which he made to God, and so he has lied to God. Let us examine then, beloved, our conscience and our life. To which side do we belong, to Christ's or to His enemy's? To the good, or to the evil? To the lot of the saved or to that of the lost? He that is not with Christ is the enemy of Christ. For Christ Himself said, He that is not with Me is against Me (Matt. 12:30).
Beloved, let us watch ourselves and let us be with Christ here in this world, as we have vowed at Baptism: let us be with Christ here that we may be with Christ in the age to come, according to His promise that cannot lie, Where I am, there shall also My servant be (John 12:26). Let us serve Him here as our King and God, that on the Day of Judgment He will acknowledge us as His laborers and number us with His faithful servants and open unto us the doors of everlasting joy. Remember the vows made at Baptism.
So that you may act on the aforementioned points, you must remember the vows you made at holy Baptism. For though not you yourself but your sponsor made those vows before God on your behalf, you promised then, spitting on Satan, and on his pride, and on his service, and on his evil works-you promised, I say-and vowed to serve Jesus Christ your Lord and Redeemer in faith and in truth, together with the Father and the Holy Spirit.
Consider, Christian, what vows you made and to Whom. It is a grievous thing to lie to a man; how incomparably more grievous it is to lie to God. God is not mocked (Gal. 6:7). When a Christian does not stand on his promises and does not keep them, what mercy, then, should he expect from God, to Whom he lied? He that keeps his promises shall find himself in God's mercy and in His Kingdom. He remains faithful to God, and God will hold him in mercy and in His protection as His own. And this is what the prophet sings to God, With the holy man wilt Thou be holy, and with the innocent man wilt Thou be innocent. And with the elect man wilt Thou be elect, and with the perverse wilt Thou be perverse (Ps. 17:26-27).
Christians! All they that commit iniquity and act against their conscience do not keep their vows. These include fornicators, adulterers, and all defilers, robbers, thieves, brigands, the sly, and crafty, deceivers and the guileful, revilers and men of evil speech, drunkards, fault finders, the hateful, and the malicious; they that live in the pride and pomp of this world, and all that do not fear God. They have all lied to God and have not kept their vows, and are outside of the holy Church, though they may even go to churches and pray and receive the Mysteries and build churches and adorn them and display other signs of a Christian. Since they shall be powerfully put to the test at the Judgment of Christ and tormented more there than Turks and idolaters, avoid these deeds, Christian and do not imitate the aforementioned doers of iniquity, lest you be condemned with them to eternal fire by the just judgment of God, where their worm dieth not, and the fire is not quenched (Mark 9:44, 46, 48), but by all means endeavor so to live and act as the word of God teaches, as was said above. Keep in mind those vows of yours, and this will guide you toward the Christian life and restrain you from every evil and do you good. If you notice that you do not keep those vows, then repent and begin the Christian life anew, lest you appear before God in a lie, and perish with liars.
The fearful, and unbelieving, and the abominable,
and murderers, and whoremongers, and sorcerers,
and idolaters, and all liars, shall have their
part in the lake which burneth with fire
and brimstone: which is the second death (Apoc. 21:8).
(A chapter from The Journey to Heaven, translated by Fr. George Lardas)