Jamieson, Fausset and Brown on Ezekiel 3:3

3. honey for sweetness--Compare Psa 19:10; 119:103; Re 10:9, where, as here in Eze 3:14, the "sweetness" is followed by "bitterness." The former being due to the painful nature of the message; the latter because it was the Lord's service which he was engaged in; and his eating the roll and finding it sweet, implied that, divesting himself of carnal feeling, he made God's will his will, however painful the message that God might require him to announce. The fact that God would be glorified was his greatest pleasure.