Psalm 40:10 I have not hid thy righteousness within my heart; I have declared thy faithfulness and thy salvation; I have not concealed thy lovingkindness and thy truth from the great congregation.
David did not hide God’s righteousness, nor did he conceal God’s lovingkindness and truth from the people. Instead he declared openly God’s faithful love and salvation for all people. God’s righteousness is granted freely to all, for Christ died for all. We respond by doing everything we can to support and promote the preaching of the Gospel to the whole world. We can’t keep it to ourselves. We want everyone to know God’s love. Therefore, we declare.
The faithful love and truth of God for us has been seen in the coming of Christ into the human sphere to die and rise for us. “Tell everyone what He has done.” We have within us God’s passion to make disciples of all nations. God did it for us, and we want others to know He did it for them, too. So we contribute to the mission work of the church to declare His righteousness and salvation through the Gospel.