Daniel 10:16-17

The one who resembled a human being was probably an angel who touched his lips and thereby enabled him to speak (cf. Daniel 7:16; Daniel 8:15-19; Daniel 9:21-22; Isaiah 6:7; Jeremiah 1:9). The prophet proceeded to explain to the angel that the vision had caused him anxiety and had robbed him of his strength (cf. Isaiah 6:5). He said he felt so inferior to the angel that he considered himself unworthy to talk to him. [Note: R. H. Charles, The Book of Daniel, p. 116.] Furthermore, he felt without sufficient strength and breath to do so.