Or HaChaim on Numbers 7:24/אור החיים על במדבר ז׳:כ״ד

1 אליאב בן חלון. He was called so seeing he, or his tribe, enabled Issachar to devote themselves to the uninterrupted study of Torah. Similar considerations prompted Moses in Deut. 33,18 to mention the tribe of Zevulun ahead of the tribe of Issachar in his blessings although Issachar was senior to Zevulun by birth. The most appropriate way of translating his name would be "it behooves me to be called father (in relation to Issachar)." The word חלון emphasises that although, biologically speaking, he is only the descendant of chulin, someone secular, occupied with trading instead of Torah study, he nevertheless has attained the rank of seniority to Issachar being the one who provides the wherewithal for Issachar to study Torah.