'Today' in the Bible

I will tell the decree; Yahweh said to me: "You are my son; today I have begotten you.

For he [is] our God, and we [are] the people of his pasture and the sheep of his hand. {Today} if you will hear his voice:

Sing to Yahweh; bless his name. Announce his salvation from day to day.

By your ordinances they stand today, for all [are] your servants.