Luke 1:3-4

it seemed good to me also, having obtained exact information of all things from the very first, to write them in order for you, most excel lent Theophilus,

1 Peter 3:15

but reverence the Lord God in your hearts, and be always ready to answer every one that asks of you a reason for the hope that is in you, with meekness and fear;

John 20:31

but these are written, that you may believe that Jesus is the Christ, the Son of God, and that by believing you may have life through his name.

1 John 5:13

I have written these things to you that believe on the name of the Son of God, that you may know that you have eternal life, and that you may believe on the name of the Son of God.

Treasury of Scripture Knowledge

Summary

That I might make thee know the certainty of the words of truth; that thou mightest answer the words of truth to them that send unto thee?

Answer

Bible References

I

Luke 1:3
it seemed good to me also, having obtained exact information of all things from the very first, to write them in order for you, most excel lent Theophilus,
John 20:31
but these are written, that you may believe that Jesus is the Christ, the Son of God, and that by believing you may have life through his name.
1 John 5:13
I have written these things to you that believe on the name of the Son of God, that you may know that you have eternal life, and that you may believe on the name of the Son of God.

Answer

1 Peter 3:15
but reverence the Lord God in your hearts, and be always ready to answer every one that asks of you a reason for the hope that is in you, with meekness and fear;