Romans 8:38-39
Modern English Version
38 For I am persuaded that neither death nor life, neither angels nor principalities nor powers, neither things present nor things to come, 39 neither height nor depth, nor any other created thing, shall be able to separate us from the love of God, which is in Christ Jesus our Lord.
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This passage clearly shows that God loves people, and nothing can cause God to use affection wrongly or unjustly. We can also expect that God is familiar with the sins of people and how it influences the mind. Since we are imperfect, we cannot expect God to also be imperfect, John 9:31. The correct concept of a human saying “Once saved always saved” is:
Matthew 12:31
Easy-to-Read Version
31 “So I tell you, people can be forgiven for every sinful thing they do and for every bad thing they say against God. But anyone who speaks against the Holy Spirit will not be forgiven.