My meditation
siyach (see'-akh)
a contemplation; by implication, an utterance -- babbling, communication, complaint, meditation, prayer, talk.
of him shall be sweet
`areb (aw-rabe')
to be agreeable -- be pleasant(-ing), take pleasure in, be sweet.
I will be glad
samach (saw-makh')
probably to brighten up, i.e. (figuratively) be (causatively, make) blithe or gleesome
in the LORD
Yhovah (yeh-ho-vaw')
(the) self-Existent or Eternal; Jehovah, Jewish national name of God -- Jehovah, the Lord.