'Strive' in the Bible

{And he said this of Judah}, "Hear, O Yahweh, the voice of Judah, and bring him to his people; his own hands strive for him, and may you be a help {against} his foes."

But strive for the greater gifts. And I will show you a still more excellent way.

Pursue love, and strive for spiritual [gifts], but especially that you may prophesy.