Ibn Ezra on Ki Sisa 33:3

English: FOR I WILL NOT GO UP IN THE MIDST OF THEE. They will not erect the tabernacle, 9 The construction of which was described earlier. for I will not rest in the midst of Israel. [LEST I CONSUME THEE IN THE WAY.] I will immediately consume them if they once again act in this manner. Akhelkha (I consume thee) is vocalized with a segol 10 Beneath the kaf . in place of a pattach , and its lamed does not have a dagesh in it even though the rules of grammar require it. 11 That the word be vocalized with a pattach beneath the kaf and that a dagesh be placed in the lamed . Compare the word achavvekha (I will tell thee) 12 In other words, akhelkha should have followed the vocalization of achavvekha . in