It's not a matter of us standing outside it and ticking off the boxes: yes, the Bible is faithful here; yes, it's telling the truth there, and so on, but rather granted that it's God-given. It's the frame of reference that shows us how to live in, tells us how to think about everything.
D. A. CarsonTo worship God 'in spirit and in truth' is first and foremost a way of saying that we must worship God by means of Christ. In him the reality has dawned and the shadows are being swept away (Hebrews 8:13). Christian worship is new covenant worship; it is gospel-inspired worship; it is Christ-centered worship; it is cross-focused worship.
D. A. CarsonIf God had perceived that our greatest need was economic, he would have sent an economist. If he had perceived that our greatest need was entertainment, he would have sent us a comedian or an artist. If God had perceived that our greatest need was political stability, he would have sent us a politician. If he had perceived that our greatest need was health, he would have sent us a doctor. But he perceived that our greatest need involved our sin, our alienation from him, our profound rebellion, our death; and he sent us a Savior.
D. A. CarsonThat God normally operates the universe consistently makes science possible; that he does not always do so ought to keep science humble.
D. A. CarsonThe important thing, Jesus is saying (in Matthew 5:33-37), is to tell the truth and keep one's pledges without insisting that a certain form of words must be used if it is to be binding. No oath is necessary for the truthful person... Their word is so reliable that nothing more than a statement is needed from them.
D. A. Carson