Fundamental to the Old Testament understanding of joy are God's Acts in history, themost important of which is Israel's deliverance from Egypt (Exod 18:9-11).Israel's return from the Babylonian exile (Jer 31:1-19) toJerusalem is above the highest joy (Psalm 137:6).he element of joy in religion is still more prominent in the New Testament. It is the appropriate response of the believer to the good tidings of great joy which constitute the gospel (Luke 2:10). In the four Gospels, especially Luke, this element is conspicuous.
1 Obtain your tube and compare it to a control. 2  If the color is intensely deep pink after 2 days, it is positive for rapid urease hydrolysis.  If it is yellow or orange, the test is negative. The organism either does not hydrolyze urea rapidly or it cannot live in the medium.
Two bacterial broth cultures, showing a positive result (left side) and a negative result (right side) for the VP test. VogesâProskauer /ËfoÊÉ¡És ËprÉskaÊ.Ér/ or VP is a test used to detect acetoin in a bacterial broth culture. The test is performed by adding alpha-naphthol and potassium hydroxide to the Voges-Proskauer broth which has been inoculated with bacteria. A cherry red color indicates a positive result, while a yellow-brown color indicates a negative result. The test depends on the digestion of glucose to acetylmethylcarbinol. If glucose is being broken down, it will react with alpha-naphthol (VP reagent #1) and potassium hydroxide (VP reagent #2) to form a red color. Alpha-naphthol and potassium hydroxide are chemicals that detect acetoin.