But be sure of this: if the owner of the house had known when during the night the thief would be coming, he would have stayed awake and not allowed his house to be broken into.

He told the man, "Be sure that you don't tell anyone. Instead, go and show yourself to the priest, and then offer for your cleansing what Moses commanded as proof to the authorities."

Then Zechariah asked the angel, "How can I be sure of this, since I am an old man, and my wife is getting older?"

But be sure of this: if the homeowner had known at what time the thief were coming, he would have watched and would not have let his house be broken into.

because the words that you gave me I passed on to them. They have received them and know for sure that I came from you. They have believed that you sent me.

Then Peter came to himself and said, "Now I'm sure that the Lord has sent his angel and rescued me from Herod and from everything the Jewish people were expecting!"

(Oh yes, I also baptized the family of Stephanas. Beyond that, I'm not sure whether I baptized anyone else.)

not that another one really exists. To be sure, there are certain people who are troubling you and want to distort the gospel about the Messiah.

So joyfully welcome him in the Lord and make sure you honor such people highly,

When this letter has been read among you, have it read also in the church of the Laodiceans, and be sure to read the one from Laodicea.

Make sure that no one pays back evil for evil. Instead, always pursue what is good for each other and for everyone else.

Pray for us, for we are sure that we have a clear conscience and desire to live honorably in every way.

you may be sure that whoever brings a sinner back from his wrong path will save his soul from death and cover a multitude of sins.

This is how we can be sure that we have come to know him: if we continually keep his commandments.

But whoever continually keeps his commandments is the kind of person in whom God's love has truly been perfected. This is how we can be sure that we are in union with God:

The person who keeps his commandments abides in God, and God abides in him. This is how we can be sure that he remains in us: he has given us his Spirit.

And if we know that he listens to our requests, we can be sure that we have what we ask him for.