Mark 14:11
And when they heard it, they were glad, and promised to give him money. And he sought how he might conveniently betray him.
And when they heard it, they were glad,.... That such an opportunity offered, and from such a quarter, by one of his own disciples; so that it might be done more secretly and effectually, and with less blame to themselves:
and promised to give him money; any sum he should ask; and what was agreed upon were thirty pieces, or shekels of silver; and so the Ethiopic version here, instead of money, reads, "thirty pieces of silver"; See Gill on "Matthew 26:15".
And he sought how he might conveniently betray him; after this promise, and upon this agreement: henceforward he sought the most fitting opportunity, and the best season of betraying his master into the hands of these men, when he was alone, and the multitude absent, and there was no danger of a tumult, or a rescue;
See Gill on "Matthew 26:16".