Nevertheless David took the stronghold of Zion, this is the City of David. 2 Samuel 5:7.
Zion was a city inhabited lame and blind. David came in and created his city in Zion leading to the spiritual life, Zion represents the refuge, encouragement to those who are rejected .. But the house of David was also known as a stronghold of David.
Zion was so important that when Solomon finished building the temple, removed the Ark of the Covenant that was in the House of David (Zion) and led to the Temple.
Today, Zion represents the Christian or Christian who is in the Presence of God and that, in the same way that Zion was important to God and rejected by men, so is the Christian in his walk with the Lord Jesus. Beloved by the Lord and rejected by men.
"I looked, and behold the Lamb standing on Mount Zion, and with him an hundred forty and four thousand, having written his forehead Name and the Name of His Father" Revelation 14:1. Mount Zion is viewed by God as the Holy Mount, the mountain that was remembered and built by David to become the City of David.
Do not look at the circumstance, do not think you can not, is not pessimistic and does not have low self esteem. Zion Christian is like Fort and built. It is to fight and win. It was God who chose you to be the City of Fort his relatives. Think about it.
Stay strong with God.