Use of the Word "Faith" in the Old Testament (continued):

Many of the scriptures in the Old Testament refer to faith along with the action of God, an individual or individuals.  The following table helps to illustrate this:

Faith In Action
Old Testament Scripture:	Action or Decision
Proverbs 13:17  -- "A wicked messenger falls into adversity, but a faithful envoy brings healing."	"...brings healing"
Proverbs 14:5 -- "A faithful witness will not lie, but a false witness speaks lies."	"...will not lie..."
2 Chronicles 19:9 -- "Then he charged them saying, "Thus you shall do in the fear of the LORD, faithfully and wholeheartedly."	"...thus you shall do..."
2 Chronicles 31:12 -- "And they faithfully brought in the contributions and the tithes and the consecrated things	"brought in the contributions..."
2 Chronicles 31:15 -- "And under his authority were Eden, Miniamin, Jeshua, Shemaiah, Amariah, and Shecaniah in the cities of the priests, to distribute faithfully their portions to their brothers by divisions, whether great or small..."	"...distribute..their portions..."
2 Chronicles 31:18 -- "And the genealogical enrollment included all their little children, their wives, their sons, and their daughters, for the whole assembly, for they consecrated themselves faithfully in holiness."	"...consecrated themselves..."
2 Chronicles 34:12 -- "And the men did the work faithfully with foremen over them to supervise: Jahath and Obadiah, the Levites of the sons of Merari, Zechariah and Meshullam of the sons of the Kohathites, and the Levites, all who were skillful with musical instruments."	"...did the work...with foremen over them..."
Psalm 33:4 -- "For the word of the LORD is upright; and all His work is done in faithfulness."	"...all His work is done..."
Psalm 96:13 -- "Before the LORD, for He is coming; for He is coming to judge the earth. He will judge the world in righteousness, and the peoples in His faithfulness."	"...He will judge...the peoples..."
Psalm 119:30 -- "I have chosen the faithful way; I have placed Thine ordinances before me."	"...I have placed Thine ordinances before me..."
Psalm 119:75 -- "I know, O LORD, that Thy judgments are righteous, and that in faithfulness Thou hast afflicted me."	"...Thou hast afflicted me..."
Proverbs 12:22 -- "Lying lips are an abomination to the LORD, but those who deal faithfully are His delight."	"...those who deal..."
Isaiah 25:1 -- "O LORD, Thou art my God; I will exalt Thee, I will give thanks to Thy name; for Thou hast worked wonders, plans formed long ago, with perfect faithfulness."	"...Thou hast worked wonders..."
Hosea 2:20 -- "And I will betroth you to me in faithfulness. Then you will know the LORD."	"...I will betroth you to me..."
Habakkuk 2:4 -- "Behold, as for the proud one, His soul is not right within him; but the righteous will live by his faith."	"...righteous will live by..."

Question:

In the Old Testament, God is described as "faithful"...and also individuals are described as "faithful."  In the examples given above, this faith that they have is being shown by what?