In no particular order:
"I have said these things to you, that in Me you may have peace. In the world you will have tribulation. But take heart; I have overcome the world."
"Then you will know the truth, and the truth will set you free."
I've actually considered requesting this as an epitaph on my gravestone, assuming I'm buried when I die.
Therefore God has highly exalted Him and bestowed on Him the name that is above every name, so that at the name of Jesus every knee should bow, in heaven and on Earth and under the Earth, and every tongue confess that Jesus Christ is Lord, to the glory of God the Father.
Trust in the Lord with all your heart, and do not lean on your own understanding. In all your ways acknowledge Him, and He will make straight your paths.
If I ever win an elected office, this is the verse I want the Bible opened to when I take the oath.
For His anger is but for a moment, and His favor is for a lifetime. Weeping may tarry for a night, but joy comes with the morning.
"Just so, I tell you, there will be more joy in heaven over one sinner who repents than over ninety-nine righteous persons who need no repentance.
O Lord, You have searched me and known me!
You know when I sit down and when I rise up;
You discern my thoughts from afar.
You search out my path and my lying down
And are acquainted with all my ways.
Even before a word is on my tongue,
Behold, O Lord, You know it altogether.
You hem me in, behind and before,
And lay Your hand upon me.
Such knowledge is too wonderful for me;
It is high; I cannot attain it.
Where shall I go from Your Spirit?
Or where shall I flee from Your presence?
If I ascend to heaven, You are there!
If I make my bed in Sheol, You are there!
If I take the wings of the morning
And dwell in the uttermost parts of the sea,
Even there Your hand shall lead me,
And Your right hand shall hold me.
If I say, "Surely the darkness shall cover me,
And the light about me be night."
Even the darkness is not dark to You;
The night is bright as the day,
For darkness is as light with You.
It's in my signature; I'm sure a few people have seen it.
I also like Luke 23:43
I like that verse too, but only with the verses immediately preceding it.