Correct. 

  For if after they have escaped the defilements of the world by the knowledge of the Lord and Savior Jesus Christ, they are again entangled in them and are overcome, the last state has become worse for them than the first. For it would be better for them not to have known the way of righteousness, than having known it, to turn away from the holy commandment delivered to them. It has happened to them according to the true proverb, "A dog returns to its own vomit," and, "A sow, after washing, returns to wallowing in the mire." 2 Peter 2:20-22 (NAS)

How often do you reflect on needing to be faithful to God until the end?  Consider what God's word says:

Matthew 10:22 "...but it is the one who has endured to the end who will be saved. (NAS)

Matthew 24:13 "But the one who endures to the end, he shall be saved. (NAS)

Mark 13:13 "...but the one who endures to the end, he shall be saved. (NAS)

Revelation 2:7 'He who has an ear, let him hear what the Spirit says to the churches. To him who overcomes, I will grant to eat of the tree of life, which is in the Paradise of God.' (NAS)

Revelation 2:11 'He who has an ear, let him hear what the Spirit says to the churches. He who overcomes shall not be hurt by the second death.' (NAS)

Revelation 2:26 'And he who overcomes, and he who keeps My deeds until the end, to him I will give authority over the nations; (NAS)

Revelation 3:5 'He who overcomes shall thus be clothed in white garments; and I will not erase his name from the book of life, and I will confess his name before My Father, and before His angels. (NAS)

Revelation 21:7 "He who overcomes shall inherit these things, and I will be his God and he will be My son. (NAS) 

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