Truth: should be Believed
Source: Nav
2 Thessalonians 2:12, 13
in order that judgment may come upon all who have disbelieved the truth and delighted in wickedness. / But we should always thank God for you, brothers who are loved by the Lord, because God has chosen you from the beginning to be saved by the sanctification of the Spirit and by faith in the truth.
1 Timothy 4:3
They will prohibit marriage and require abstinence from certain foods that God has created to be received with thanksgiving by those who believe and know the truth.