1 Samuel 20:5

20:5 David said to Jonathan, “Tomorrow is the new moon, and I am certainly expected to join the king for a meal. You must send me away so I can hide in the field until the third evening from now.

1 Samuel 20:18

20:18 Jonathan said to him, “Tomorrow is the new moon, and you will be missed, for your seat will be empty.

tn Heb “and I must surely sit with the king to eat.” The infinitive absolute appears before the finite verb for emphasis.