They take the timbrel and harp - ישאו yisu, they rise up or lift themselves up, probably alluding to the rural exercise of dancing. תף toph, which we translate timbrel, means a sort of drum, such as the tom-tom of the Asiatics. כנור kinnor may mean something of the harp kind. עוגב ugab, organ, means nothing like the instrument now called the organ, though thus translated both by the Septuagint and Vulgate; it probably means the syrinx, composed of several unequal pipes, close at the bottom, which when blown into at the top, gives a very shrill and lively sound. To these instruments the youth are represented as dancing joyfully. Mr. Good translates: "They trip merrily to the sound of the pipe." And illustrates his translation with the following verse: -

"Now pursuing, now retreating,Now in circling troops they meet;

To brisk notes in cadence beating,Glance their many twinkling feet."

The original is intended to convey the true notion of the gambols of the rustic nymphs and swains on festival occasions, and let it be observed that this is spoken of the children of those who say unto God, "Depart from us; for we desire not the knowledge of thy ways. What is the Almighty, that we should serve him? and what profit should we have if we pray unto him?" Job 21:14, Job 21:15. Is it any wonder that the children of such parents should be living to the flesh, and serving the lusts of the flesh? for neither they nor their parents know God, nor pray unto him.

Genesis 4:21 And his brother's name was Jubal: he was the father of all such as handle the harp and organ.

Genesis 31:27 Why did you flee away secretly, and steal away from me; and did not tell me, that I might have sent you away with mirth, and with songs...

Isaiah 5:12 And the harp, and the viol, the tabret, and pipe, and wine, are in their feasts: but they regard not the work of the LORD...

Isaiah 22:13 And behold joy and gladness, slaying oxen, and killing sheep, eating flesh, and drinking wine: let us eat and drink...

Amos 6:4-6 That lie on beds of ivory, and stretch themselves on their couches, and eat the lambs out of the flock...

Whether the Rewards Assigned to the Beatitudes Refer to this Life?
Objection 1: It would seem that the rewards assigned to the beatitudes do not refer to this life. Because some are said to be happy because they hope for a reward, as stated above [1672](A[1]). Now the object of hope is future happiness. Therefore these rewards refer to the life to come. Objection 2: Further, certain punishments are set down in opposition to the beatitudes, Lk. 6:25, where we read: "Woe to you that are filled; for you shall hunger. Woe to you that now laugh, for you shall mourn and …
Saint Thomas Aquinas—Summa Theologica

How Christ is the Way in General, "I am the Way. "
We come now to speak more particularly to the words; and, first, Of his being a way. Our design being to point at the way of use-making of Christ in all our necessities, straits, and difficulties which are in our way to heaven; and particularly to point out the way how believers should make use of Christ in all their particular exigencies; and so live by faith in him, walk in him, grow up in him, advance and march forward toward glory in him. It will not be amiss to speak of this fulness of Christ …
John Brown (of Wamphray)—Christ The Way, The Truth, and The Life

The Sovereignty of God in Salvation
"O the depths of the riches both of the wisdom and knowledge of God! how unsearchable are His judgements, and His ways past finding out" (Rom. 11:33). "Salvation is of the LORD" (Jonah 2:9); but the Lord does not save all. Why not? He does save some; then if He saves some, why not others? Is it because they are too sinful and depraved? No; for the Apostle wrote, "This is a faithful saying, and worthy of all acceptation, that Christ Jesus came into the world to save sinners; of whom I am chief" (1 …
Arthur W. Pink—The Sovereignty of God