You need an ETA for Israel if you have a Singaporean passport

Travelers need a travel authorization to visit Israel for Business or Tourism. Visa-exempt visitors entering Israel must obtain an Electronic Travel Authorization (eTA). Travelers can submit the eTA application online. Once the application is approved, travelers receive their eTA confirmation electronically. An eTA is electronically linked to a passport and valid for up to 2 years. If travelers receive a new passport, they must apply for a new eTA. A valid eTA is required to board the flight. If the eTA is expired or doesn’t match the traveler’s passport information, travelers will not be able to board their flight. This requirement doesn’t apply to: -Travelers in possession of an Israeli identity number; -Travelers with a valid visa for Israel.