New Living Translation
“Here’s another chance to see him killed by the Philistines!” Saul said to himself. But to David he said, “Today you have a second chance to become my son-in-law!”

American Standard Version
And Saul said, I will give him her, that she may be a snare to him, and that the hand of the Philistines may be against him. Wherefore Saul said to David, Thou shalt this day be my son-in-law a second time.

Berean Study Bible
“I will give her to David,” Saul thought, “so that she may be a snare to him, and the hand of the Philistines may be against him.” So Saul said to David, “For a second time now you can be my son-in-law.”

Douay-Rheims Bible
And Saul said: I will give her to him, that she may be a stumblingblock to him, and that the band of the Philistines may be upon him. And Saul said to David: In two things thou shalt be my son in law this day.

English Revised Version
And Saul said, I will give him her, that she may be a snare to him, and that the hand of the Philistines may be against him. Wherefore Saul said to David, Thou shalt this day be my son in law a second time.

King James Bible
And Saul said, I will give him her, that she may be a snare to him, and that the hand of the Philistines may be against him. Wherefore Saul said to David, Thou shalt this day be my son in law in the one of the twain.

World English Bible
Saul said, I will give her to him, that she may be a snare to him, and that the hand of the Philistines may be against him. Therefore Saul said to David, "You shall this day be my son-in-law a second time."

Young's Literal Translation
and Saul saith, 'I give her to him, and she is to him for a snare, and the hand of the Philistines is on him;' and Saul saith unto David, 'By the second -- thou dost become my son-in-law to-day.'

1 Samuel 18:21 Additional Translations ...