Albert Barnes Commentary Psalms 145:11

"They shall speak of the glory of thy kingdom, And talk of thy power;" — Psalms 145:11 (ASV)

They shall speak of the glory of your kingdom - Of your reign; of the great principles of your government and laws. They see in that reign evidence that you are worthy of universal praise. Seeing this, it becomes to them a subject on which they talk or converse - a subject of interest to their hearts, and out of the abundance of the heart the mouth speaks. People talk about that which interests them; those things in which they have pleasure; those which they desire to understand; those in which they see difficulties that they would wish to have solved.

It is one of the characteristics of the saints - of the people of God - that they do talk about God and his kingdom; that the subject is to them a pleasant theme of meditation and conversation; that they have the kind of pleasure in talking about God which other people have in conversing about their farms or their merchandise, their children and friends, the news of the day, politics, literature, or science.

And talk of your power - As put forth in the works of creation; as manifested in the dispensations of your providence; as evinced in the conversion of sinners; as displayed in carrying your truth around the world; as exhibited in sustaining the sufferer, and in giving peace and support to the dying.