These words continue the thought begun by the words "they stay fresh and green" in ([Psalms 92:14](./014.md)). Possible meanings are 1) "they stay fresh and green, so that they can proclaim" or 2) "they stay fresh and green. This shows that."
"Yahweh is the one who protects me." The psalmist speaks of Yahweh as if he were a rock that would protect him. See how this is translated in [Psalms 18:2](../018/002.md). (See: [[rc://en/ta/man/translate/figs-metaphor]])