and to Patience Godliness

 2Pet 2:5 And beside this, giving all diligence, add to your faith virtue; and to virtue knowledge; 6 And to knowledge temperance; and to temperance patience; and to patience godliness; 7 And to godliness brotherly kindness; and to brotherly kindness charity.

Godliness here is translated from the Greek eusebeia, (yoo-seb-i-ah).

it means piety and is derived from a word which means devout and a further derivation from a word which means to revere or adore.

In Acts 3:12 it is used to explain that it wasn't by Peter and John's own holiness that a lame man was made to walk. Making it clear that godliness is not how we earn anything from God, but it is a maturing in the ways of God. It is not that they did not have godliness, but that it was not the reason for the miracle. The word pious is often used derisively in our world today, but godliness is valuable to add to your faith.

Paul uses this word often in his instructions to Timothy. 

1Tim 3:14 These things write I unto thee, hoping to come unto thee shortly: 15 But if I tarry long, that thou mayest know how thou oughtest to behave thyself in the house of God, which is the church of the living God, the pillar and ground of the truth. 16 And without controversy great is the mystery of godliness: God was manifest in the flesh, justified in the Spirit, seen of angels, preached unto the Gentiles, believed on in the world, received up into glory.

He goes on further to instruct Timothy to exercise thyself unto godliness because it is profitable, and to teach doctrine which is according to godliness and that gain is not godliness, but godliness is great gain. (1Tim 4:7-8; 6:3-6, 11) He also makes reference that there are forms of godliness, but they deny the power of godliness. (2Tim 3:5)

Lastly Peter lets us know that godliness is key in light of the judgments of God:

2Pet 3:11 Seeing then that all these things shall be dissolved, what manner of persons ought ye to be in all holy conversation and godliness, 12 Looking for and hasting unto the coming of the day of God, wherein the heavens being on fire shall be dissolved, and the elements shall melt with fervent heat?

Reverent worship of God, a life of devotion to God and to his ways is great gain.