Matthew 21:16

21:16 and said to him, “Do you hear what they are saying?” Jesus said to them, “Yes. Have you never read, ‘Out of the mouths of children and nursing infants you have prepared praise for yourself’?” ¹ 

Matthew 21:42

21:42 Jesus said to them, “Have you never read in the scriptures:

‘The stone the builders rejected has become the cornerstone. ² 

This is from the Lord, and it is marvelous in our eyes’? ³ 

[21:16]  ¹ sn A quotation from Ps 8:2.

[21:42]  ² tn Or “capstone,” “keystone.” Although these meanings are lexically possible, the imagery in Eph 2:20-22 and 1 Cor 3:11 indicates that the term κεφαλὴ γωνίας (kefalh gwnia") refers to a cornerstone, not a capstone.

[21:42]  ³ sn A quotation from Ps 118:22-23.