Here are 4 Bible verses about play from the Old and New Testaments of the Holy Bible (King James Version), sorted from most to least relevant.
Zechariah 8:5 KJV
And the streets of the city shall be full of boys and girls playing in the streets thereof.
Psalms 150:1-6 KJV
Praise ye the LORD. Praise God in his sanctuary: praise him in the firmament of his power. Praise him for his mighty acts: praise him according to his excellent greatness. Praise him with the sound of the trumpet: praise him with the psaltery and harp. Praise him with the timbrel and dance: praise him with stringed instruments and organs. Praise him upon the loud cymbals: praise him upon the high sounding cymbals. Let every thing that hath breath praise the LORD. Praise ye the LORD.
Acts 1:1 KJV
The former treatise have I made, O Theophilus, of all that Jesus began both to do and teach,
Zechariah 8:15 KJV
So again have I thought in these days to do well unto Jerusalem and to the house of Judah: fear ye not.