Many things can be true. It is true that the sky is blue. Grass is green. NY Pizza is better than CT pizza. Okay, that last might not be objectively true. The point is that many (not all) things have the quality of containing some truth.
God doesn’t contain some truth. Nor does God merely tell the truth. God is, in his nature, in all three persons, truth.
- Let God be true, and all men be liars (Rom 3:4)
- Jesus is the way, the truth, and the life. (John 14:6)
- The Holy Spirit is the Spirit of Truth (John 14:17; 15:26; 6:13)
Scripture is so strong on this point that it says it is impossible for God to lie (Heb 6:18-19) and describes Him as the God who Never Lies (Titus 1:2 or the Un-lying God)! We can always absolutely trust Him.