Charles Ellicott Commentary Isaiah 55:6

"Seek ye Jehovah while he may be found; call ye upon him while he is near:" — Isaiah 55:6 (ASV)

While he may be found ... —The appeal shows that the promised blessings are not unconditional. There may come a time when “too late” will be written on all efforts to gain the inheritance which has been forfeited by neglect (2 Corinthians 6:2).