Isaiah 40:6

The same voice continued to call out (cf. Isaiah 40:3). This time a messenger asked what to call, and the voice instructed him. He was to announce the brevity of human life, comparing it to the grass that quickly turns brown in Palestine and to the wildflowers that only last a few weeks (cf. 1 Peter 1:24). Israel’s oppressors were no stronger or more reliable than grass. Their loveliness (Heb. hesed, constancy) was ephemeral.