If thou seek him; if thou desirest his help and favour. See Deuteronomy 30:2 Isaiah 45:6. With all thy heart, i.e. sincerely and fervently.
Related Commentaries of Deuteronomy 4:29
Deuteronomy 4:29
29 But if from thence thou shalt seek the LORD thy God, thou shalt find him, if thou seek him with all thy heart and with all thy soul.