Be ye strong therefore, and let not your hands be weak: for your {d} work shall be rewarded.

(d) Your confidence and trust in God will not be frustrated.

Wesley's Notes

15:7 Be strong - Go on resolutely to maintain God's worship and to root out idolatry, as you have begun to do; for this is the only method of preserving yourselves from such calamities as your predecessors have felt.

Jamieson-Fausset-Brown Bible Commentary

7. Be ye strong-Great resolution and indomitable energy would be required to persevere in the face of the opposition your reforming measures will encounter.

your work shall be rewarded-What you do in the cause and for the glory of God will assuredly be followed by the happiest results both to yourself and your subjects.

Matthew Henry's Concise Commentary

15:1-19 The people make a solemn covenant with God. - The work of complete reformation appeared so difficult, that Asa had not courage to attempt it, till assured of Divine assistance and acceptance. He and his people offered sacrifices to God; thanksgiving for the favours they had received, and supplication for further favours. Prayers and praises are now our spiritual sacrifices. The people, of their own will, covenanted to seek the Lord, each for himself, with earnestness. What is religion but seeking God, inquiring after him, applying to him upon all occasions? We make nothing of our religion, if we do not make heart-work of it; God will have all the heart, or none. Our devotedness to God our Saviour, should be avowed and shown in the most solemn and public manner. What is done in hypocrisy is a mere drudgery.