'Striving' in the Bible

For this I labor [often to the point of exhaustion], striving with His power and energy, which so greatly works within me.

Epaphras, who is one of you and a bond-servant of Christ Jesus, sends you greetings. [He is] always striving for you in his prayers, praying with genuine concern, [pleading] that you may [as people of character and courage] stand firm, [spiritually mature] and fully assured in all the will of God.