约翰福音里揭示神为生命的泉源（源头）。神我们的父乃是源，这源显出为泉，而泉涌出河川。在黎巴嫩山脚下，有源和泉，涌出一道河，就是约但河。这是我们的神一幅很好的图画。
神流出来分赐祂自己，带着祂神圣的生命作生命的元素，也就是生命的供应（基督这生命树），以应付祂选民的需要，并作他们的喜乐和满足（启二二1-2，参诗三六8-9）。为这目的，当基督死在十字架上时，不仅有血（表征法理上的救赎）流出来，也有水（表征生机上分赐到神选民里面的生命之水）流出来（约十九34）。我们是主的选民。赞美祂，祂拣选了我们，然后呼召我们接受祂这涌流的神作为源，带着基督作流中的元素。何等令人喜乐，何等令人饱足！
诗篇三十六篇八至九节说，『他们必因你殿里的肥甘，得以饱足；你也必叫他们喝你乐河〔直译，喜乐之河〕的水。因为在你那里，有生命的源头〔直译，生命之源〕；在你的光中，我们必得见光。』从这两节经文里，我撷取了两个辞：『饱足』和『喜乐』。一个得救的人，应当以基督为饱足，并充满了神的喜乐。神是生命之源，使人得着饱足，满有神圣的喜乐。这是读圣经的路，使我们得着生命内在、中心的线。『源』、『喜乐』和『饱足』都可见于诗篇三十六篇。没有这三个辞，这篇诗就只是死的字句，对我们不过是虚空的虚空。但在这篇诗里，我们能看见神是源，涌流如同河川，使我们饱足，并以祂的喜乐充满我们。
基督死在十字架上时，从祂身上有血和水流出来（约十九34）。别卷福音书没有记载这个事实。约翰福音和启示录一样，是表号的书。血和水都是表号。血表征法理一面的救赎，水表征生机一面生命的涌流，分赐到神的选民里面。
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The Fountain of Life — Psa. 36:8-9
The Gospel of John reveals God as the fountain (source) of life. God our Father is the source, and the source appears as a fountain, and the fountain gushes out into rivers. At the foot of the mountains of Libya there were springs and fountains from which a river gushed out, that was the Jordan. This is a wonderful picture of our God.
God flows out and dispenses Himself with His divine life as the life element, that is, the life supply (Christ as the tree of life), to meet the needs of His elect and to be their joy and satisfaction (Rev. 22:1 -2, cf. Psa. 36:8-9). For this purpose, when Christ died on the cross, not only blood (signifying judicial redemption) was poured out, but also water (signifying the water of life organically dispensed into God’s chosen people) was poured out (John 19:34) . We are the Lord’s chosen people. Praise Him! He has chosen us and then calls us to receive Him as the flowing God to be the source, with Christ as the element in the flow. How joyful and satisfying!
Psalm 36:8-9 says, “They drink their fill of the abundance of Your house; and You give them to drink of the river of Your delights [literally, river of joy]. For in you is the fountain of life [literally, source of life]; in your light we see light. ” From these two verses, I extracted two words: “satisfaction” and “joy.” A saved person should be satisfied with Christ and filled with the joy of God. God is the source of life, filling people with divine joy. This is the way to read the Bible, which enables us to obtain the inner and central thread of life. “Fountain”, “joy” and “satisfaction” are all found in Psalm 36. Without these three words, this psalm would be just dead words, vanity of vanity. But in this psalm, we can see that God is the source, flowing like a river, satisfying us and filling us with His joy.
When Christ died on the cross, blood and water flowed from Him (John 19:34). The other Books of Gospel do not record this fact. The Gospel of John, like the Book of Revelation, is a book of symbols. Blood and water are symbols. The blood signifies redemption on the judicial side, and the water signifies the flow of life on the organic side, which is dispensed into God’s chosen people.