27 He is not a God of the dead, but of the living; you greatly err.
Mark 12:27 Cross References - Sawyer
Mark 12:24
24 Jesus said to them, Do you not err on this account, not knowing the Scriptures, nor the power of God?
Romans 4:17
17 as it is written, I have made you a father of many nations before God in whom he believed, who makes the dead alive and calls things which do not exist as existing.—
Romans 14:9
9 For this end Christ died and lived again, that he might exercise lordship over the dead and living.
Hebrews 3:10
10 Wherefore I was displeased with that generation and said, They always err in mind, and they did not know my ways,
Hebrews 11:13-16
13 (4:7) All these died in faith not having received the promises, but having seen and saluted them from a distance, and having professed that they were foreigners and strangers on the earth.
14 For those who say such things show that they seek a native country.
15 And if they had remembered that country from which they went out, they would have had opportunity to return;
16 but now they seek a better, that is a heavenly [country]. Wherefore God is not ashamed of them to be called their God; for he has prepared for them a city.