Isaiah 55:6

Seek ye the Lord: having discoursed of the office and work of Christ, and showed that he should call people and nations to himself, and to God, he now endeavours to persuade the people to hearken to his call, and to seek the Lord, i.e. to labour to get the knowledge of God's will, and to obtain his grace and favour; neither of which things were to be done but in and through Christ. And this invitation or exhortation is general, like that Isaiah 55:1, reaching to all nations, both Jews and Gentiles, implying that both of them had lost him and his favour, and were gone astray from him. Seek him, ye Gentiles, whom he now inviteth so to do, and will assist in finding him. And seeing the Gentiles seek him earnestly, let their example provoke you Jews to imitate them therein, and take heed that you do not reject him, whom they will receive and own. While he may be found; in this day of grace, whilst he offereth mercy and reconciliation to you; which he will not always do. Compare Proverbs 1:24, &c.; Luke 19:44 2 Corinthians 6:2. While he is near; near to you by his gracious presence and offers in his ordinances, ready and desirous to receive you to mercy upon the following conditions.