and have tasted and consciously experienced the good word of God and the powers of the age (world) to come,

so that by two unchangeable things [His promise and His oath] in which it is impossible for God to lie, we who have fled [to Him] for refuge would have strong encouragement and indwelling strength to hold tightly to the hope set before us.

However, God finds fault with them [showing its inadequacy] when He says,

“Behold, the days will come, says the Lord,
When I will make and ratify a new covenant
With the house of Israel and with the house of Judah;

for a will and testament takes effect [only] at death, since it is never in force as long as the one who made it is alive.