1robin said:
How can an imperfect being know what perfection means? How do you know (beyond the fact the Bible says so) that lying is imperfect? He may be perfectly evil. He may be perfectly ambiguous. He may be able to change the nature of truth itself.
Aren't the texts enough evidence for you? You admitted that you believe that lying is imperfect.
Consider the following:
Titus 1:2: "In hope of eternal life which God, who cannot lie, promised before time began."
Hebrews 6:18: "It is impossible for God to lie."
The words "cannot", and "impossible" clearly show that you are wrong.
Consider the following Scriptures:
2 Corinthians 1:20-22
"For no matter how many promises God has made, they are "Yes" in Christ. And so through him the "Amen" is spoken by us to the glory of God. Now it is God who makes both us and you stand firm in Christ. He anointed us, set his seal of ownership on us, and put his Spirit in our hearts as a deposit, guaranteeing what is to come."
Ephesians 1:13-14
"And you also were included in Christ when you heard the word of truth, the gospel of your salvation. Having believed, you were marked in him with a seal, the promised Holy Spirit, who is a deposit guaranteeing our inheritance until the redemption of those who are God's possession-to the praise of his glory."
James 1:12
"Blessed is the man who perseveres under trial, because when he has stood the test, he will receive the crown of life that God has promised to those who love him."
1 John 2:24-25
"See that what you have heard from the beginning remains in you. If it does, you also will remain in the Son and in the Father. And this is what he promised us-even eternal life."
You obviously do not know what you are talking about. The assurance that Christians have cannot change. You have taken clear, simple texts, and tried to make them say something that they do not say.
You said:
"How can an imperfect being know what perfection means? How do you know (beyond the fact the Bible says so) that lying is imperfect? He may be perfectly evil. He may be perfectly ambiguous. He may be able to change the nature of truth itself."
If I had argued that God might be a liar instead of arguing that he cannot have free will, you would not have said that since that would have helped my arguments.
If God is omnipotent, omniscient, and omnibenevolent, he could not possibly ever lie. An all good, unchanging being cannot lie.