Sought opportunity to betray him - Luke adds, "in the absence of the multitude." This was the chief difficulty - to deliver him into the hands of the priests so as not to have it known by the people, or so as not to excite tumult.
The "opportunity" which he sought, therefore, was one in which the multitude would not see him, or could not rescue the Saviour.
To betray him - The word "betray" commonly means to deliver into the hands of an enemy by treachery or breach of trust; to do it while friendship or faithfulness is "professed." All this took place in the case of Judas. But the word in the original does not necessarily imply this. It means simply to "deliver up," or to give into their hands. He sought opportunity "how he might deliver him up to them," agreeably to the contract.

He sought opportunity - Ευκαιριαν, a convenient or fit opportunity. Men seldom leave a crime imperfect: when once sin is conceived, it meets, in general, with few obstacles, till it brings forth death. How deceitful, how deeply damning, is the love of money! Well might a heathen exclaim, while contemplating the grave of a person who was murdered for the sake of his wealth: -
- Quid non mortalia pectora cogis Auri Sacra Fames?
Virg. Aen. iii. 56
"O! cursed lust of gold! what wilt thou not compel the human heart to perpetrate?"
Judas is deservedly considered as one of the most infamous of men, his conduct base beyond description, and his motives vile. But how many, since his time, have walked in the same way! How many, for the sake of worldly wealth, have renounced the religion of their Lord and Master, and sold Jesus, and their interest in heaven, for a short-lived portion of secular good! From John 12:6, we learn that Judas, who was treasurer to our Lord and his disciples, (for he carried the bag), was a thief, and frequently purloined a portion of what was given for the support of this holy family. Being disappointed of the prey he hoped to have from the sale of the precious ointment, Matthew 26:9, he sold his Master to make up the sum. A thorough Jew!

And from that time he sought opportunity to betray him. Luke adds, "in the absence of the multitude", Luke 22:6; in the most private manner, when he was alone, and in some solitary place, that no tumult might arise, and that there might be no danger of a rescue: for so he, and the chief priests, had consulted, and settled it, as what would be most prudent and advisable; and therefore, from that time forward, being prompted on by Satan, and the lucre of the money he was to receive, he narrowly watched, and diligently observed, the best and most fitting season to perform his enterprise, and quickly offered.

From that time. The time of the bargain with the priests. No one can tell certainly what day the bargain was completed.