NT.filter - nkjv convenient:

nkjv@Mark:14:11 @ And when they heard it, they were glad, and promised to give him money. So he sought how he might conveniently betray Him.

nkjv@Acts:24:25 @ Now as he reasoned about righteousness, self-control, and the judgment to come, Felix was afraid and answered, "Go away for now; when I have a convenient time I will call for you."

nkjv@1Corinthians:16:12 @ Now concerning our brother Apollos, I strongly urged him to come to you with the brethren, but he was quite unwilling to come at this time; however, he will come when he has a convenient time.