Keluaran 14:19

14:19 The angel of God, who was going before the camp of Israel, moved and went behind them, and the pillar ¹  of cloud moved from before them and stood behind them.

Keluaran 24:18

24:18 Moses went into the cloud when he went up ²  the mountain, and Moses was on the mountain forty days and forty nights. ³ 

[14:19]  ¹ sn B. Jacob (Exodus, 400-401) makes a good case that there may have been only one pillar, one cloud; it would have been a dark cloud behind it, but in front of it, shining the way, a pillar of fire. He compares the manifestation on Sinai, when the mountain was on fire but veiled by a dark cloud (Deut 4:11; 5:22). See also Exod 13:21; Num 14:14; Deut 1:33; Neh 9:12, 19; Josh 24:7; Pss 78:14; 105:39.

[24:18]  ² tn The verb is a preterite with vav (ו) consecutive; here, the second clause, is subordinated to the first preterite, because it seems that the entering into the cloud is the dominant point in this section of the chapter.

[24:18]  ³ sn B. Jacob (Exodus, 750) offers this description of some of the mystery involved in Moses’ ascending into the cloud: Moses ascended into the presence of God, but remained on earth. He did not rise to heaven – the ground remained firmly under his feet. But he clearly was brought into God’s presence; he was like a heavenly servant before God’s throne, like the angels, and he consumed neither bread nor water. The purpose of his being there was to become familiar with all God’s demands and purposes. He would receive the tablets of stone and all the instructions for the tabernacle that was to be built (beginning in chap. 25). He would not descend until the sin of the golden calf.