For length of days and years of a life [worth living] and tranquility [inward and outward and continuing through old age till death], these shall they add to you.
The hoary head is a crown of beauty and glory if it is found in the way of righteousness (moral and spiritual rectitude in every area and relation). [Prov. 20:29.]
[After all] the kingdom of God is not a matter of [getting the] food and drink [one likes], but instead it is righteousness (that state which makes a person acceptable to God) and [heart] peace and joy in the Holy Spirit.
May the God of your hope so fill you with all joy and peace in believing [through the experience of your faith] that by the power of the Holy Spirit you may abound and be overflowing (bubbling over) with hope.
THEREFORE, SINCE we are justified (acquitted, declared righteous, and given a right standing with God) through faith, let us [grasp the fact that we] have [the peace of reconciliation to hold and to enjoy] peace with God through our Lord Jesus Christ (the Messiah, the Anointed One).
That your days and the days of your children may be multiplied in the land which the Lord swore to your fathers to give them, as long as the heavens are above the earth.
For physical training is of some value (useful for a little), but godliness (spiritual training) is useful and of value in everything and in every way, for it holds promise for the present life and also for the life which is to come.