If God were a liar, then why are we here? Rather, God is the truth, for in John 14:6, it is written, " 6 Jesus said to him, ' I am l the way, and m the truth, and n the life. No one comes to the Father except through me. '" Again, Jesus ( see 10:25 ) said in verse thirty, "' 30 u I and the Father are one. '" Since Jesus is the truth, that implies that God, for example, is the truth, through the concept of the Godhead ( see Romans 1:20; 1 John 5:6, 7, for example; KJV, for example ).
So why are we here? Because God created the universe and the human race ( see Genesis, chapters 1 and 2, for example ). Furthermore, in order for God to create the church, His Son Jesus Christ was sent to this earth to live a perfect, sinless life, to be crucified on the cross of Calvary for the sins of all those who will keep His commandments, and to be raised on the third day, according to the Scriptures ( see Matthew 1:16; 16:13-20 ( especially verses 16-18, for example ); Mark 16:15, 16; Luke 22:14-23 ( especially verse 20, for example; KJV, for example ); 23:26-49 ( especially verse 33, for example; KJV, for example ); John 3:16, 17, and 36; 5:26, 27; 7:16; 8:26, 29; 10:11; chapter 15 ( especially verses 12-14, for example ); 1 Corinthians, chapter 15 ( especially verses 3 and 4, for example ); and Ephesians 2:10; 5:25, for example ).
If there were no New Testament church, then no one would be saved ( see Acts 2:38, 41, and 47 ( KJV, for example ), for example ). If there were no Godhead, then there would be no New Testament church ( see Ephesians 1:15-23 ( especially verses 22 and 23, for example ), for example ). If there were no God, then there would be no physical existence.
We know that we exist, therefore God is not a liar. God has said, " Do not lie to one another. " Please seek and read from the book of the LORD ( see Isaiah 34:16, for example ).