Arcana Coelestia # 7664
7664. 'For it is a feast of Jehovah for us' means worship of the Lord offered by every single one. This is clear from the meaning of 'a feast' as worship with gladness of mind, dealt with in 7093. The reason why it is worship of the Lord is that 'Jehovah' in the Word is the Lord, 1343, 1736, 2921, 3023, 3035, 5663, 6307, 6905, 6945, 6956. The fact that worship by every single one is meant is evident from what comes immediately before, where it says that they would go with children and old men, with sons and daughters, and with flocks and herds.
Arcana Coelestia # 6303
6303. 'And God will be with you' means the Lord's Divine Providence. This is clear from the meaning of 'God will be with you' as the Lord's Divine Providence; for when the Lord is with someone He leads him and makes provision so that all that happens, whether sad or joyful, may bring him what is good. This is Divine Providence. It is called the Lord's Providence because the words 'God will be with you' are used and in the Word 'God' and 'Jehovah' mean the Lord since there is no other God apart from Him. For truly He is the Father and truly He is the Son, because they are one; the Father is in Him, and He is in the Father, as He Himself teaches in John 14:9-11, see 1743, 1736, 2921, 3035, 5663.